Brake-shoe.



H.- JONEIS.

BRAKE SHOE. APPLICATION FILED FEB-10, 1911. 995,967, v Patented June 13,1911.

)6 Inventor:

UHE s roan, it. Y.

ATENT' onnioii.

BnaKE snoE.

To all whom it may concern: Be it knownthat I, HARRY J ONES, a c1t1 zen of the United States, and a resident of.

Suiiern, in the county of Rockland and State of New. York, have made and invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification.

My invention relates to brake shoes of the type having a body portion formed from cast metal, such for example as cast iron, and having within the same inserts formed from a material different from said body, such material, in the more specific embodiment of my invention, being non-metallic. The inserts above referred to are placed within the mold in which the shoe is to be formed and the moltenmetal from which thebody is formed poured thereinto, whereby the inserts become embedded and to a greater or less extent surrounded by the molten. metal; and the object of my invention is to provide a metallic supporting member for the inserts whereby they are securely held in place during the casting of the shoe and subsequently throughout the life of the shoe, it being understood that the inserts and the cast body of the shoe are simultaneously worn' away when the shoe is in use; and which supporting member serves also to strengthen the shoe and to hold the partsaof the cast body thereof together and in place should the shoe become broken in use. Further, the strengthening member being worn away with the inserts and cast body portion, it forms a part of the bearing surface of the shoe, and contributes to the braking action.

'lVith the objects in view and such as will hereinafter appear, my invention consists in the improved brake shoe illustrated in the accompanying drawing, described in the following specification, and particularly claimed in the clauses of the concluding claim ofinvention, and in such modifications thereof as will be'obvious to those skilled in the art to which my invention relates.

In the drawing: Figure 1 is a view showing a section of hay improved brake shoe upon a plane passing longitudinally thereof; Fig, 2 is a section taken upon a surface indicated by the line 22, Fig. 1; Fig. 3 is a view showing a section upon a transverse from cast iron of a selected with a view in F 1g. 4;, or two or more such ,ward or downward, referring Specification of Letters Patent. Patented 11119 13, 1911, Application filed February 10; 1911.

Serial No. 807,726.

The body portion Set my improved brake shoe is formed from cast metal, preferably quality and composition to securin a maximum of friction and, consequently, ot retarding or braking action between the brake shoe and the car wheel.

9 is a" metallic supporting member formed from wrought iron or' mild steel or similar strong and tough material, which, member serves as a support for inserts 1G, a plurality of such inserts being commonly provided as shown. A single supporting member with inserts carried thereby may be used as shown supporting members may be used as indicated in Figs.

'1 and 3, the inserts being smaller and more numerous in the latter than in the former case as will be understood; a

Recesses or pockets 11 are formed in the supporting member 9 within which the inserts 10 are contained such recessesbeing preferably formed by displacing the material of the supporting member either-upto Fig. 1, this being best accomplished by a punching process in which a. displacement of the material adjacent the punch is sought rather than a sharp and clean cut hole, the recess or pocket being in the nature of a pronounced or excessive bur formed by driving a comparatively dull punch into and preferably through the supporting member, the die with which the punch cooperates being considerably larger than the punch. I In,the manufacture of my improved brake shoe the supporting member is first formed and the inserts placed in the recesses or pockets and secured therein, after which the supporting member with the inserts which it supports, or-twoor more of such supporting members, is placed in the mold in which the body portion of the shoe is to be cast and the molten metal of which the body is formed poured about the supporting member, whereby the same together with the inserts which it carries becomes embedded in and, commonly, surrounded by the metal of the body portion of the shoe.

T0 EDWARD H. FALLOWS, on NEW I The inserts 10 are pneferablw formed from:

a suitable non-metallic material or materials such as fire clay, ground slag, asbestos, plumbago, or similar substances, or from a mixture of two or more of them, selected withreference to seciiring a maximum braking and, under certain circumstances, a limited amount of lubricating action. The ingredients from which the inserts are formed may be mixed with a moistening or binding liquid to form a plastic mass, and the inserts formed by pressing the plastic material into the pockets or recesses, or the inserts may be 'firstmolded into 'form such that they will ing member, in addition, strengthens the cast metal body portion of the shoe and holds the parts of the body portion together should It become broken in use, and, finally, as the walls of the recesses in which the inserts are contained wear away with the inserts and body portion, it follows that the said supporting member contributes in part to the braking action of the shoe.

The supporting member 9 is provided with holes 12 through which the metal from which the body ortion 8 of the shoe may flow as the shoe 1s formed whereby connections are provided between the portions of the body upon the two sides of the. support-' ing member and the shoe strengthened. This construction lessens the liability of the body of the shoe to separate from the sup.- porting members when the shoe is in use, it being diflicult" in practice to secure an entirely satisfactory union between the cast metal body of the shoe and the supporting member. As many openings 12 Will'be provided us maybe necessary to secure adequate strength in the finished shoe.

Wh le I have referred to the member or plate as a support for a plurality of inserts, the latter may be omitted without sacrificing the advantages secured by the plate. In such cases the cast metal from which the body portion 8 is made, flows into, through. and fills the pockets 11 as the molten metal is poured into the mold, the result being a brake shoe, the wearing face of which is made up for the most part of castiron, but which includes annular portions ,of wrougl'it iron or steel contributed by the plate 9. The projecting pockets also ser :e to space the plates in case two or more are used.

Having thus described my invention and.65 explained the operation thereof, I claim and desire to secure by Letters Patent.

, l. A brake shoe comprising a body por- \tion formed from cast-metal, and a plate pro- .yided with a series of'projecting open bottom pockets, said plate being embedded in said body portion and the openbottoms of said pockets being in the wearing face of the shoe.

2. A brake shoe comprising a body portion formed from cast metal, and a plurality of superposed plates embedded therlein each of which is provided with a series of projecting open bottom pockets. v

3. A brake shoe comprising a body por-- tion formed from cast metal, and a plate provided with a series ofcone-shaped pockets open at their smaller ends, said plate being embedded in said body portion.

4. A,'brake shoe comprising body portion formed from-cast metal, and a plate embedded in said body portion, said plate having a series of openings the material surrounding which is depressed to form ridges.

5. A brake shoie comprising a body portion formed from cast metal, a supporting member located within said body portion and embedded in the material thereof and having a .plurality of openings, and a plurality of inse'rts located within the openings in said supporting member and embedded in the body portion of said shoe.

6. A brake shoe comprising-a body portion formed from cast'metal, a supporting member provided with a series of pockets, and'inserts contained within said pockets, said supporting member and inserts being embedded in said body portion.

7. A brake shoe comprising a body por- I tion formed from east metal,'a supporting member portions of which are depressed to thereby form a series of pockets, and inserts contained within said pockets, said supportin member and inserts being embedded in said body portion. I

8. A brake shoe comprising a body portion formed from cast metal. a supporting member provided with a series of coneshaped pockets open at their smaller ends, and inserts contained within said pockets, said supporting member and; inserts being embedded in said body portion.

9. A brake shoe comprising a body portion formed from cast metal, and a support I ing member containing a series of non-metallic inserts, said supporting member and in serts being embedded in said body portiori.

10. A brake shoe comprising a. supporting member carrying a series of non-metallic in-' serts, and a body portion formed from east metal and surrounding both said support and said inserts.

11. A brake shoe comprising a body portion formed from east metaL-and a metallic supporting member having a series of pockets each of which contains a non-metallic.

insert, said supporting member" and inserts being embedded in said body portion.

12. A brake shoe comprising a body portion formed from cast metal, and a support- I ,13. A brake'shoe comprising a body por-.

tion formed from cast metal, and a supporting member having a series of cone-shaped pockets open at their smaller ends and each of which contains a nonmetallic insert; said supporting member and inserts being embedded in said body portion. I

14. brake shoe comprising a body portion formed from cast metal, and a supporting member having a series of openings each of which contains a non-metallic insert, said supporting member and inserts being em l bedded in said body portion.

15. A brake shoe comprising a supporting member having a series of pockets each of which contains a non-metallic insert, and a body portion formed from cast metal and surrounding said supporting member and inserts.

16. A brake shoe comprising a supporting member portions of which are depressed to thereby form a series of pockets each of which contains a non-metallic insert, and a body portion formed from cast metal and surrounding said supporting member and inserts.

17. A brake shoe comprising a metallic supporting member having a series of cone-.- shaped pockets open at their smaller ends and each of which contains a non-metallic insert, and a'body portion formed from cast metal and surrounding said supporting member and inserts.

18. A brake shoe comprising a metallic supporting memberhaving a series of open ings each of which contains a non metallio 'insert, and a. bodykportion formed from east metal and surroun ng said supporting memher and inserts.

Signed at Sufi'ern in the county of Rockland and State of New York this third day ofFebruary A. D. 1911." a

HARRY JONES. Witnesses:

F. H. Human,

' FRANK Osnomz. 

